Introduction To Audiology Practice Exam

Impedance/admittance testing in audiology is primarily used to evaluate which aspect?

To evaluate middle-ear function To detect sensorineural hearing loss To measure speech understanding in noise To assess central auditory processing

Correct Answer:

To evaluate middle-ear function

Explanation:

Impedance/admittance testing measures how readily the middle ear moves in response to sound, by assessing the mobility of the tympanic membrane and ossicular chain across changes in air pressure. This is done with tympanometry, which yields a tympanogram showing middle-ear pressure and membrane compliance. A normal result indicates the middle ear is functioning well, while abnormal patterns point to middle-ear problems such as fluid or effusion, perforation, or ossicular issues. Because it specifically probes the mechanical status of the middle ear, it is used to evaluate middle-ear function rather than cochlear or neural aspects of hearing, so it does not diagnose sensorineural loss, speech understanding in noise, or central auditory processing.

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